Hello,

I am simulating Bumper head-on collision as depicted in images. I have attached the images of the same. 

But I am getting Warnings while analysis as attached in images. I am trying to fix the elements by manual editing, but is there an easy way to deal with this situation.

Also, suggest me what is the acceptable isoparametric angles for triangular/tetrahedral elements.

Attaching DATA files for the reference.